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Gibberellins History of discovery from a plant disease phenomenon. Prior to world war II Japanese scientists were investigating a rice disease that made plants grow ...
* Gibberellins are produce in the meristems of apical buds, roots, and young leaves. Effects of Gibberellins 1. Gibberellins stimulate cell elongation and division in stems.
Gibberellins Gibberellins are named after the fungus Gibberella fujikuroi which causes rice plants to grow abnormally tall. synthesized in apical portions of stems and ...

The Interactions of Plant Hormones and rop Genes By Malem Gutema Mentor Dr. John Fowler Summer 2004 Rop Proteins Plants possess a special subfamily of GTPases denoted ...
Auxin Mode of Action Gibberellins Growth promoting hormones Bring about internode elongation of stem cells Gibberellic acid (GA3) = most common Stem elongation Can cause ...
Gibberellins Used commercially in: Increasing fruit size of seedless grapes Stimulating seed germination & seedling growth Gibberellins Promoting male flowers in ...
Gibberellins 4. Abscisic Acid 5. Ethylene PLANT GROWTH REGULATORS B. Secondary - newly discovered 1. Jasmonic Acid 2. Brassinosteroids 3.
Name of PGR (Hormones) Compound / Trade Name Auxins IAA, IBA, NAA Gibberellins GA1, GA2, GA3,..…GA60 Cytokinins Kinetin, Zeatin Ethylene Ethylene Abscissic Acid (ABA ...
Classical Plant Hormones Auxin Gibberellins Cytokinins Abscisic Acid Ethylene New generation plant hormones Brassinosteriods Salicylic acid Peptides Polyamines http ...
... differentiation (in conjunction with auxins) by stimulating RNA and protein synthesis Controls apical dominance Anti-aging hormone Gibberellins More than 80 gibberellins ...
Apical dominance Formation of lateral roots Abscission Fruit development Produced in the developing seed, auxins stimulate the development of fruits Gibberellins (GA ...
* Gibberellins: promote cell growth. More than 60 variations, all abbreviated GA1, GA2, GA3… for gibberellic acid. Occurs in young leaves, roots, and seeds.
Plant hormones auxin gibberellins abscisic acid ethylene and more… Auxin (IAA) Effects controls cell division & differentiation phototropism growth towards light ...
It can occur more rapidly, 5 cm/hr, than auxin There are many gibberellins – closely related chemically Bioassay Using an organism or other living material to ...
Plant hormones auxin gibberellins abscisic acid ethylene and more… Auxin (IAA) Effects controls cell division & differentiation phototropism growth towards light ...
Gibberellins promote fruit set 授粉後果實生長的初始階段,如蘋果。 5. Gibberellins promote seed germination 作業 (請整理pp. 464-465) 6.
Gibberellins are used in spraying of Thompson seedless grapes. Germination After water is imbibed, release of gibberellins from the embryo signals seeds to germinate.
Plant Hormones (Ch 39) The Big 5 to Know (also on plant packet): -Auxin -Cytokinins -Gibberellins -Abscisic Acid -Ethylene Auxin Auxin= hormone that promotes elongation ...
Abscisic Acid What does it Do? promotes stem elongation, over 100 naturally occurring gibberellins, can break seed dormancy * can be sprayed on fruits to make them ...
... plants, cytokinins stimulate cell division & growth of lateral buds, & cause dormant seeds to sprout Gibberellins Gibberellin - a growth-promoting substance Gibberellins ...
... of effects Such as stem elongation, fruit growth, and seed germination Stem Elongation Gibberellins stimulate growth of both leaves and stems In stems Gibberellins ...
Physiology of Seed Plants Regulating Growth and Development: The Plant Hormones Auxins Cytokinins Ethylene Abscisic Acid Gibberellins Hormones Chemical signals that ...
Gibberellins stimulate growth in both leaves and stems but have little effect on root growth. In stems, gibberellins stimulate cell elongation and cell division.
... auxin, and other factors interact in the control of apical dominance (The ability of a terminal bud to suppress development of axillary buds) Gibberellins Gibberellins ...
... Hormones are organic chemicals that act and interact to affect growth rate Auxins – (to increase) – accelerate growth by stimulating cell enlargement Gibberellins ...

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